Copper alloy electroplating technology

Abstract

The invention discloses a copper alloy electroplating technology, and belongs to the technical field of electroplating. The copper alloy electroplating technology comprises the following steps of: step one. degreasing; step two. carrying out hot water immersion; step three. carrying out pickling activation; step four. carrying out spray rinsing by using pure water; step five. correcting nickel; step six. common nickel; step seven. carrying out hot water immersion; step eight. carrying out cleaning immersion; step nine. carrying out ultrasonic cleaning; step ten. carrying out post-processing; step eleven. drying; step twelve. drying; and step thirteen. carrying out auxiliary receiving. By extending and optimizing the pre-treatment process line, the copper alloy electroplating technology canprovide an electroplating plane of follow-up coating deposition and increases the appearance binding force of a coating. Crystal lattices of the nickel coating are significantly improved by using thecorrecting nickel for priming in the electroplating process, so that the structure is tight, the crystal lattices are refined, the porosity of the coating is reduced, thus, the uniformity and glossiness of the common nickel layer appearance are ensured; and a perfect cleaning process is developed and led to cooperate with passivation treatment and hole sealing treatment, so that the corrosion resistance of the coating is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of electroplating, and more specifically, to a copper alloy electroplating process. Background technique [0002] The density of nickel is 8.907g / cm 3 , melting point 1450°C, nickel has high strength, good plasticity, high hardness, good wear resistance, strong forgeability, easy processing, good corrosion resistance, especially good alkali corrosion resistance, high temperature resistance, and small contact resistance. In the electroplating industry, the production volume of nickel plating is second only to zinc plating. [0003] Bright nickel plating---nickel layer is a silver-white metal with a yellowish light to improve the hardness, wear resistance and leveling of the surface. Its hardness is higher than that of copper, zinc, tin, cadmium, gold, silver, etc. , but lower than chromium and rhodium metals, has high chemical stability in the air, and has good stability to alkali; ordinary electroplating i...

AI Technical Summary

Problems solved by technology

[0005] 1. Poor pre-treatment. At present, 60% of the defective copper alloy electroplating products in the electroplating market are caused by poor pre-treatment;

[0006] 2. The imperfection of the electroplating process leads to low uniformity and gloss of the appearance of the nickel layer, and the porosity of the coating is large, which is prone to pitting corrosion and causes large-scale primary battery corrosion;

[0007] 3. Lack of post-processing protection measures

[0008] The above problems lead to the majority of defective products in the existing copper alloy electroplating products, the uniformity and stability of the surface appearance are poor, and the corrosion resistance of the coating is low

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